1. Created by Mandy Plunkett Modified by Charlotte Stripling
Exploring Geometric Solids
Created by Mandy Plunkett
Modified by Charlotte Stripling

2. Plane Figures

3. Sphere
A 3D figure shaped like a ball.
Formed by … rotating a circle

4. How can you form a sphere?

5. Cylinder A 3D figure that looks like a tube with 2 circular bases.
Formed by …
Rotating a rectangle or square,
Translating a circle

6. How can you form a cylinder?

7. Cone A 3D figure with a circular base and a point opposite the base.
Formed by … rotating a triangle, stacking similar circles (smaller and smaller until a point)

8. How can you form a cone?

9. Cube A rectangular prism with all edges the same length.
Formed by … translating a square (its exact side length)

10. How can you form a cube?

11. Rectangular Prism A 3d figure that looks like a box.
Formed by … translating a square or rectangle
A 3d figure that looks like a box.

12. How can you form a rectangular prism?

13. Triangular Prism A prism whose bases are triangles.
Formed by … translating a triangle
                  

14. Hexagonal Prism
Formed by … translating a hexagon

15. How can you form a pyramid?
Stack similar figures – smaller and smaller up to a point.
Similar triangles – triangular pyramid
Similar rectangles – rectangular pyramid
Similar squares – square pyramid
Similar pentagons – pentagonal pyramid
Similar hexagons – hexagonal pyramid

16. Square Pyramid
Formed by … stacking similar squares (smaller and smaller until a point)

17. Triangular Pyramid
Formed by … stacking similar triangles (smaller and smaller until a point)

18. Hexagonal Pyramid
Formed by … stacking similar hexagons (smaller and smaller until a point)

19. DEFINITIONS Cross Section: the intersection of a plane and a solid.
Formed by slicing through a 3D figure and looking at the inside 2D plane figure.
Ellipse: an oval 2D figure.
Formed by slicing a 3D figure at an angle to its circular base (oblique).

20. What cross-sections can I make from a sphere?
Circle (any direction)

21. What cross-sections can I make from a cube?
Square (vertical or horizontal), triangle (corners), hexagon (oblique), pentagon (oblique), parallelogram (oblique), rectangle (diagonal)
To see all cross sections click on link.

22. What cross-sections can I make from a cylinder?
Rectangle (vertical), Circle (horizontal), Ellipse (oblique)

23. What cross-sections can I make from a cone?
Triangle (vertical), Circle (horizontal), Ellipse (oblique)

24. What cross-sections can I make from a rectangular prism?
Rectangle (vertical or horizontal), Triangle (corners)

25. What cross-sections can I make from a square pyramid?
Triangle (vertical), Square (horizontal), Trapezoid (vertical not through vertex)